MPG with a 3.2 Carrera?
 

I have a 79 SC that I am considering switching to the later EFI 3.2. Assuming stock everything except SSI's, what kind of mileage could I reasonably expect?

Thanks,

I see 18 city, 20 mixed, and as high as 28 straight highway at speeds above 80mph.
This is with a Steve Wong Chip, and cat-bypass though... Before the chip, I might see
22 highway...

I'm getting 18 - 19 in primarily city driving.

15 around town- lots of revs once warn though- could get in the upper teens if i wanted to bore myself

28 on highway cruising-

steve wong chip and performance exhaust- plus, my car is a fat pig. needs a diet.

yes, those figures are about right. i drove an entire tank without getting off the highway or really changing my speed significantly, from somewhere in oregon back to the SF bay area and i did the math and it came out to between 27 and 28mpg. 2600lbs (per WA DOT scale) of G50 carrera 3.2 with 175lbs of driver+ luggage, with ducktail, at 70-80mph, engine stock except for SSI exchangers (so no cat) and dansk sport muffler.

wow! did the steve wong chip really improve your mileage that much?

23.5 mostly highway and country roads. Conservative SW chip. Stock euro.

21 to 22 MPG, commuting & kid-pick-up duty (55% freeway @ 80, 25% country 2 lanes @ 60, rest stop-n-go).
Slightly worse than a Park Avenue Ultra, 1300# heavier, "slightly" bigger interior, with very similar straight line performance used for the same purpose during inclement weather.

I got 24.5 mpg on a 230 mile highway trip in my '89; mostly at 75 mph with a few revs to red-line on entrance ramps.

22 mpg overall average 50/50 mix of hwy/city driving. This is with SW chip.

And it's not the only improvement you got with that SW chip...:eek:

I get about 20mpg around town / mixed, 27 highway; Weltmeister chip in '84 Cab, exhaust mods.

I've only checked mine one time (curiosity go the best of me), and over a full tank of interstate driving (75-90 mph) with an occasional "heavy foot", I calculated 27+ mph. SW chip...I'm pretty sure 30 mpg could be attainable if that was the goal...it isn't :)

I average around 24 mpg with mixed driving.

High altitude here, dont know if that makes a difference, but I average 20 around town and as high as 30 on the highway if laws are obeyed.

YES! That was the surprise bonus on top of increased low end torque, high end hp, and a smoother idle!

On my last tank I got around 425miles which is a little over 20MPG

Current average 19.4 mpg here. Mix of spirited back road driving, relaxed 90 mph highway cruising plus a few highspeed runs. 930/20 with aftermarket cat. Surprisingly efficient for a 20 year old sports car.

Totally stock 89 3.2 with 60k miles I get 25-26 on the freeway at 80, air on and the wife in the car.

I used to get 17-19 around town and 21-23 on the highway, but I'm an aggressive driver. THere are folks here that have gotten 25-30+mpg on the highway. I just don't have the will power to keep my foot out of it.

When I brought my then stock 87 cabriolet from chicago - I averaged 26mpg for the entire trip (72 mph average, 1100 miles.) One tank close to 30mpg. one tank at 21 mpg - but I averaged close to 94mph for that tank ;)

With the 3.4 - and 993ss cams - I averaged 17mpg on the way to daytona and RRIII - but it's worth it...

Finally got to take a long trip (260 miles) and check my 3.2 mileage.
The car is totally stock, i.e. no CAT bypass, original muffler, and stock chip,
and with speed between 60-70 MPH the car got 31 miles/gal.

wow, I only get 22+/- (90% SCal freeway) and I thought that is really good.

The problem is with SCal freeway. It's all that traffic you're sitting in!

I think the fuel consumption may be higher on the newer fuel (see old thread below)

The jury's still out for me, but I recently got mid 20-ish mpg on a trip that I usually get low 30ish mpg on.

Has anyone else noticed their fuel mileage getting worse?

http://forums.pelicanparts.com/porsche-911-technical-forum/302832-30-mpg-carrera-3-2-possible.html